Deepwater depth finder probe device and arrangement method thereof

Abstract

The invention relates to the technical field of deepwater sounding equipment, and discloses a deepwater depth finder probe device and an arrangement method thereof. The device comprises a flow guide cover, a first depth finder probe assembly, a second depth finder probe assembly, an anti-corrosion zinc block and a ship bottom plate. The flow guide cover comprises a bottom plate, a box wall and a partition plate; the upper edge of the box wall is connected with a ship bottom plate; the lower edge of the box wall is connected with the bottom plate; the lower edge of the partition plate is vertically connected with the bottom plate, and the interior of the flow guide cover is divided into two spaces which are used for installing the depth finder probe assemblies respectively. The method comprises the steps of selecting an arrangement area, arranging a mounting position and determining a fairing mounting angle. According to the invention, the probe is arranged in an area with minimum bubble and noise influence at the bottom of the ship by using the fairing with a relatively simple structure, so that the problem that the probe of the deepwater depth finder works abnormally under severe sea conditions is solved.

Description

Technical Field

[0001] The invention patent relates to the technical field of deep-water depth sounding equipment, specifically a deep-water depth sounder probe device and its arrangement method. Background Art

[0002] The depth sounder plays a vital role in modern scientific research and engineering. It provides the necessary technical means for marine scientific research, helps scientists to deeply explore the hydrological, geological and biological characteristics of the deep sea, and promotes the continuous development of marine science. At the same time, the depth sounder also shows its importance in resource exploration, hydrological survey and environmental monitoring, submarine engineering and cultural heritage protection. Its application range covers all aspects from resource exploration to marine ecological protection, providing key technical support for human understanding, utilization and protection of the ocean, and promoting the sustainable development of marine cause.

[0003] Since the deep-water echo sounder probe is arranged at the bottom of the ship and directly contacts the seawater, it works by emitting sound waves and propagating them in the water and receiving echoes. The underwater environment is easily affected by the outside world, the hull structure and the configuration of the propeller. It is very difficult to choose the probe layout position. Because sound waves are easily affected by bubbles and noise, the conventional layout method only selects the layout position through experience or convention, lacking a theoretical basis. Once the selected layout position is unreasonable, it will affect the normal operation of the equipment, causing the ship to enter the dock for modification, resulting in certain economic losses. Therefore, before choosing the layout position, it is necessary to use scientific and reasonable methods to minimize the risk of the entire layout of the deep-water echo sounder probe.

[0004] Related reference CN117985174A discloses a ship depth sounder installation structure capable of reducing the impact of noise, wherein a penetrating installation hole is opened on the bottom deck of the ship, a cylindrical structure is arranged in the installation hole, a sensor package assembly for emitting and / or receiving ultrasonic waves is arranged in the cylindrical structure, a fairing of the shell structure is buckled on the bottom deck of the ship with the protruding side facing outward, and the through hole is sleeved on the first end of the cylindrical structure, the outer edge of the end face of the first end of the cylindrical structure is aligned with the edge of the through hole and welded, and the outer edge of the fairing is welded to the outer surface of the bottom deck of the ship; a cavity is formed between the fairing and the surface of the bottom deck of the ship, and a sound insulation structure including multiple plate-like structures is arranged in the cavity, and the structure is relatively complicated.

[0005] The relevant reference CN116911120A discloses a method for overall optimization layout design of acoustic navigation sensors for surface ships. Through modeling and numerical simulation area selection, typical navigation state ship bottom flow field simulation and layout area selection, ship bottom key part noise measurement test and layout scheme selection, etc., the working position suitable for arranging the acoustic navigation sensor is determined. The conclusion is to use the position as close to the ship's rocking center as possible as the preferred layout scheme for the acoustic navigation sensor. Compared with the qualitative requirements for the installation position given in the relevant ship specifications, the installation position accuracy of this method is improved, but there is still uncertainty (qualitative range), and it is necessary to use "key part noise measurement test" to determine the best location scheme; at the same time, the invention does not consider the installation protection of the acoustic navigation sensor backflow cover, and cannot solve the problem of abnormal operation of the deep-water depth sounder probe in severe sea conditions.

[0006] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a method for arranging a deep-water depth sounder probe on a cable-laying ship by using a relatively simple deflector to arrange the probe in an area with the least influence of bubbles and noise on the bottom of the ship, thereby solving the problem that the deep-water depth sounder probe works abnormally under severe sea conditions.

[0008] In order to solve the above technical problems, the present invention provides a deep-water depth sounder probe device, including a deflector, a depth sounder probe component 1, a depth sounder probe component 2, an anti-corrosion zinc block and a bottom plate; the deflector includes a bottom plate, a box wall and a partition; the upper edge of the box wall is fixedly connected to the bottom plate, and the lower edge of the box wall is fixedly connected to the bottom plate; the lower edge of the partition is vertically connected to the bottom plate, dividing the interior of the deflector into two spaces, which are respectively used to install the depth sounder probe component 1 and the depth sounder probe component 2.

[0009] By adopting the above technical solution, the deflector is assembled from a bottom plate, a box wall and a partition, and has a very simple structure. As a protective device for the depth sounder probe, it can effectively reduce fluid resistance and noise, protect the depth sounder probe, and improve its working efficiency.

[0010] Preferably, the partition is provided with an upper notch and a lower notch, and the upper notch and the lower notch are used as a seawater passage.

[0011] By adopting the above technical solution, upper and lower recesses are set on the partition as seawater channels, so that the depth sounder probe assembly 1 and the depth sounder probe assembly 2 can communicate with seawater, preventing seabed mud from entering and corroding the probe.

[0012] Preferably, the anti-corrosion zinc block is installed at the middle and lower part of the partition and faces one side of the depth sounder probe assembly 2, and the seawater channel is arranged at the upper notch of the partition.

[0013] By adopting the above technical solution, in the marine environment, the probe of the depth sounder is often exposed to seawater, and the electrolyte in the seawater will corrode the metal probe. The anti-corrosion zinc block uses the electrochemical properties of zinc. When the probe becomes the anode, the anti-corrosion zinc block acts as the cathode and transfers the corrosion current to the zinc through electrolysis reaction, thereby protecting the depth sounder probe from corrosion and extending the service life of the depth sounder probe.

[0014] Preferably, the deflector is configured as a special-shaped box-type structure that tapers along the direction of coastal water flow, and the box wall is formed by combining and mirroring three curved surfaces: curved surface one, curved surface two, and curved surface three.

[0015] By adopting the above technical solution, the deflector is a tapered special-shaped box structure, which is conducive to the smooth flow of seawater and reduces the influence of eddy currents and noise on the accuracy of the depth sounder.

[0016] Preferably, the three curved surfaces, namely, curved surface 1, curved surface 2 and curved surface 3, as well as their upper edges and the bottom plate of the ship, and their lower edges and the bottom plate are all connected by welding.

[0017] By adopting the above technical solution, the three sections of curved surface are connected to the bottom plate and the bottom plate by welding, so that the fairing forms a more solid overall structure, thereby enhancing the bearing capacity and wind and wave resistance of the fairing.

[0018] Preferably, the line type formulas of the first, second and third surfaces are as follows:

[0019] The coordinate plane of the coordinate system is the upper plane of the deflector, the coordinate origin O is taken at the center of the plane on the bulkhead, X is the longitudinal centerline of the bottom of the ship; Y1 is the Y coordinate of the first projection of the curved surface; Y2 is the Y coordinate of the second projection of the curved surface; Y3 is the Y coordinate of the third projection of the curved surface.

[0020] By adopting the above technical solution and using fluid mechanics simulation analysis software to optimize the curves of surface one, surface two and surface three of the box wall, the flow rate of seawater flowing through the fairing is smooth, the vortex is small, and the vibration noise is low.

[0021] The arrangement method of the cable-laying vessel deep-water depth sounder probe comprises the following steps: Step 1: Select the area where the depth sounder probe device is to be deployed The bubbles generated by the bow of the cable-laying ship move forward with the ship, expand continuously from the bow to the stern along the bottom shape of the hull, and are absorbed by the propeller. Through simulation analysis, the reasonable interval with less bubble influence is section A at the bottom of the lower bow area. This area is defined as a along the longitudinal length of the ship. Section A is the area where the depth sounder probe device is arranged. Step 2: Arrange the installation position of the depth sounder probe device According to the outer plate line shape of the bow of the ship, the horizontal distance from the outer end of the bow of the ship to the starting point of the bottom plane is determined to be L3, that is, the angle θ1 between the tangent line of the end point C of the outer plate line shape and the horizontal line is 0°; the reasonable area A section for the arrangement of the depth sounder probe device includes the outer plate line shape and the bottom plane CD. Considering the convenience of installation and construction, the depth sounder probe device is arranged in the bottom plane CD of section A. The formula for the installation position range L1 of the depth sounder probe device is as follows: L1≤a-L3; Step 3: Determine the installation angle of the air deflector According to the hull structure angle and the form of the fairing, the simulation analysis method is used for iterative calculation: S31: Use fluid mechanics simulation software to analyze the smoothness of water flow near the guide cover; S32: The influence of different inclination angles on the negative pressure near the deflector is analyzed. The results show that the smaller the negative pressure, the smoother the flow field near the deflector. Combined with the probe installation reference manual, the inclination angle θ of the bottom surface of the deflector is determined to be 2°.

[0022] By adopting the above technical solution, the layout design of the deep-water echo sounder probe is optimized based on the combination of fluid mechanics numerical simulation and the setting of the deflector. Through fluid simulation analysis, the area where the bubbles and noise at the bottom of the ship have the least impact on the probe during the operation of the ship is determined. The probe is arranged in this area to ensure the normal operation of the probe, so that the probe is less affected by bubbles and noise during the navigation of the ship, and the detection accuracy of the echo sounder during navigation is improved. It can be used to guide the overall layout optimization design of similar or similar sensors. It solves the problem of abnormal operation of the deep-water echo sounder probe in severe sea conditions and can meet the actual use requirements of cable-laying ships.

[0023] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention optimizes the layout of the deep-water depth sounder probe based on a combination of fluid mechanics numerical simulation and the setting of a deflector. Through fluid simulation analysis, the area where the bubbles and noise at the bottom of the ship have the least impact on the probe during the operation of the ship is determined. The probe is arranged in this area to ensure the normal operation of the probe, so that the probe is less affected by bubbles and noise during the navigation of the ship, and the detection accuracy of the depth sounder during navigation is improved. It can be used to guide the overall layout optimization design of similar or similar sensors. It solves the problem of abnormal operation of the deep-water depth sounder probe in severe sea conditions and can meet the actual use requirements of cable-laying ships.

[0024] 2. The deflector of the present invention is assembled from a bottom plate, a box wall and a partition plate, and has a very simple structure. As a protective device for the depth sounder probe, it can effectively reduce fluid resistance and noise, protect the depth sounder probe, and improve its working efficiency.

[0025] 3. The guide cover of the present invention does not need to be additionally provided with a sound insulation structure. The guide cover is a tapered special-shaped box structure. When seawater flows through the guide cover, the seawater flows smoothly, reducing the influence of eddy currents and noise on the accuracy of the depth sounder.

[0026] 4. The present invention uses fluid mechanics simulation to analyze the fluid state near the fairing according to different installation angles of the fairing, and optimizes the installation angle of the fairing, so that the negative pressure on the probe of the depth sounder is smaller, and the eddy current and vibration noise are smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a composition diagram of the cable-laying vessel depth sounder probe device of the present invention; Figure 2 This is a structural view of the air deflector of the present invention; Figure 3 A top view of the air deflector of the present invention; Figure 4 It is a schematic diagram of bubble formation on the bottom surface of a ship according to the present invention; Figure 5 This is a schematic diagram of the bubble layer distribution on the bottom surface of a ship of the present invention (looking up); Figure 6 This is a model diagram of the installation position of the depth sounder probe of the present invention ( Figure 4 (Partial enlargement of 1A); Figure 7 This is a schematic diagram of the installation position of the depth sounder probe device of the present invention on the bottom of the ship; Figure 8 This is a diagram showing the arrangement of the probe device of the cable-laying vessel depth sounder of the present invention; Fig. 9 It is a velocity vector diagram near the water bubble when the installation angle of the deflector of the present invention is 0°; Fig.10 It is the velocity vector diagram near the water bubble when the inclination angle of the deflector is not 0°.

[0028] Figure number: 1- fairing, 2- depth sounder probe assembly 1, 3- depth sounder probe assembly 2, 4- anti-corrosion zinc block, 5- seawater channel 1, 6- bottom plate, 7- seawater channel 2, 11- bottom plate, 12- box wall, 13- partition, 10- bow, 20- hull, 30- stern, 40- propeller, 50- bubble layer, 1B- outer plate line shape. DETAILED DESCRIPTION

[0029] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The depth sounder uses the time between the emission and reception of sound waves to calculate the water depth, and the environment is an important factor affecting the measurement accuracy. The inflow state of bubbles at the bottom of the cable-laying ship varies depending on the ship type and speed. In order to reduce the impact of bubbles and noise at the bottom of the ship on the depth sounder probe, the present invention provides a deflector as a protective device for the depth sounder probe, which can effectively reduce fluid resistance and noise, protect the depth sounder probe, and improve its working efficiency.

[0031] like Figure 1-2 As shown, the depth sounder probe device includes a deflector 1, a depth sounder probe assembly 1 2, a depth sounder probe assembly 2 3, an anti-corrosion zinc block 4 and a bottom plate 6. The deflector 1 includes a bottom plate 11, a box wall 12 and a partition 13. The deflector 1 is assembled from the bottom plate 11, the box wall 12 and a partition 13. The structure is quite simple. As a protective device for the depth sounder probe, it can effectively reduce fluid resistance and noise, protect the depth sounder probe, and improve its working efficiency. An upper notch 13c and a lower notch 13e are provided on the partition 13. The upper notch 13c is used as a seawater channel 1 5, and the lower notch 13e is used as a seawater channel 2 7, which is used to connect seawater, realize the mutual communication of seawater between the depth sounder probe assembly 1 2 and the depth sounder probe assembly 2 3, and prevent the seabed mud from entering the corrosion probe. The lower edge of the partition 13 is vertically connected to the bottom plate 11 by welding, dividing the interior of the shroud 1 into two spaces, which are used to install the depth sounder probe assembly 1 2 and the depth sounder probe assembly 2 3 respectively. The size of the space is determined by the size of the installed depth sounder probe assembly, including the height and width of the internal space of the shroud 1. The height direction (water depth direction) also needs to consider the passability, operation and maintenance needs of the installation depth sounder probe wire 31. The depth sounder probe assembly 1 2 includes a probe 1, and the depth sounder probe assembly 2 3 includes a probe 2.

[0032] like Figure 3 As shown, a depth sounder probe assembly 1 2 is installed on the circular installation opening on the left side of the deflector 1, and a depth sounder probe assembly 2 3 is installed on the square installation opening on the right side of the deflector 1. The depth sounder probe assembly 1 2 and the depth sounder probe assembly 2 3 are used independently, with different frequencies and different measured water depths.

[0033] The anti-corrosion zinc block 4 is installed in the middle and lower part of the partition 13 and faces the side of the depth sounder probe assembly 2 3. In the marine environment, the depth sounder probe 1 and probe 2 are often in contact with seawater, and the electrolyte in the seawater will corrode the metal probe. The anti-corrosion zinc block 4 uses the electrochemical properties of zinc. When the two probes become anodes, the anti-corrosion zinc block 4 acts as a cathode and transfers the corrosion current to zinc through an electrolytic reaction, thereby protecting the depth sounder probe from corrosion and extending the service life of the depth sounder probe.

[0034] The fairing shroud 1 is configured as a special-shaped box-type structure that tapers along the direction of coastal water flow, and is used to ensure smooth seawater flow when the ship is sailing, and to reduce the impact of eddy currents and noise on the accuracy of the depth sounder. The box wall 12 is composed of three curved surfaces, namely, curved surface 1 12a, curved surface 2 12b, and curved surface 3 12c, which are combined and mirrored. The three curved surfaces 12a, curved surface 2 12b, and curved surface 3 12c are connected by welding, as well as their upper edges and the bottom plate 6, and the lower edges of the three curved surfaces and the edges of the bottom plate 11. The three curved surfaces are connected to the bottom plate 6 and the bottom plate 11 by welding, so that the fairing shroud 1 forms a more solid overall structure, thereby enhancing the bearing capacity and wind and wave resistance of the fairing shroud 1. Each curved surface of the box wall 12 has a smooth transition between them, establishing a structure such as Figure 3 The coordinate system shown in FIG. 1 is a coordinate system in which the coordinate plane is the upper plane of the fairing 1 (the welding surface with the bottom plate 6), the X-axis is the longitudinal centerline of the bottom of the ship, the positive direction points to the bow, the Y-axis is perpendicular to the X-axis, and the positive direction is from left to right (standing at the bow and looking at the stern), and the coordinate origin O is taken at the center of the plane on the partition 13; the fluid mechanics simulation analysis software is used to optimize the three curved surfaces of the box wall 12: the curved surface 1 12a, the curved surface 2 12b, and the curved surface 3 12c, so that the seawater flowing through the fairing 1 has a gentle flow velocity, small vortex, and low vibration noise. The formula of the obtained model is as follows:

[0035] X is the longitudinal centerline of the bottom of the ship; Y1 is the Y coordinate of the projection of the curved surface 12a; Y2 is the Y coordinate of the projection of the curved surface 2 12b; Y3 is the Y coordinate of the projection of the curved surface 3 12c.

[0036] like Figures 4 to 6 As shown, the arrangement method of the deep water depth sounder probe device includes the following steps: Step 1: Select a reasonable area for the layout of the depth sounder probe device Under normal conditions, the bubbles generated by the bow 10 of the cable-laying ship move forward with the ship, and continuously expand from the bow 10 to the stern 30 along the bottom shape of the hull 20, and are absorbed by the propeller 40. Through simulation analysis, the reasonable interval with less bubble influence is the bottom section A of the lower bow area. This area is defined as a along the longitudinal length of the ship. Section A is the reasonable area for the layout of the depth sounder probe device. Step 2: Arrange the optimal installation position of the depth sounder probe device Figure 6The figure shows a partial enlarged view of the bow 1A of the ship. According to the outer plate line type 1B (BC arc) of the bow of the ship, the horizontal distance from the outer end of the bow of the ship (the front end point B of the bulbous bow) to the starting point C of the bottom plane is determined to be L3, that is, the angle θ1 between the tangent line of the end point C of the outer plate line type 1B and the horizontal line is 0°; the reasonable area A section where the deflector 1 and the depth sounder probe assembly 12 and the depth sounder probe assembly 23 are arranged includes the outer plate line type 1B and the bottom plane CD. For the convenience of installation and construction, the deflector 1 and the depth sounder probe assembly 12 and the depth sounder probe assembly 23 should be arranged in the bottom plane CD of section a, that is, the installation position range of the depth sounder probe device is L1: L1≤a-L3; It should be noted that according to the simulation analysis results of step 1, L1 is along the length of the ship, and the deflector 1 and the depth sounder probe assembly 1 2 and the depth sounder probe assembly 2 3 are symmetrically arranged along the center line of the ship bottom; within this range, considering the influence of related equipment on the installation position, a more ideal installation position can be found; Figure 7 shown.

[0037] Step 3: Determine the installation angle of the air deflector like Figure 8 to Figure 10 As shown in the figure, according to the hull structure angle and the depth sounder probe deflector form, the simulation analysis method is used for iterative calculation: S31: Use fluid mechanics simulation software to analyze the smoothness of water flow near the deflector 1; the analysis results show that when the deflector 1 is installed at an inclination angle θ=0°, obvious vortices are generated; the water flow near the deflector 1 is smoother when it is tilted at a certain angle than when the deflector 1 has no angle; S32: Analyze the negative pressure near the shroud 1 at different inclination angles. Since the flow field near the shroud 1 is smoother when the negative pressure is smaller, the inclination angle of the shroud 1 with the smallest negative pressure is selected as much as possible. Combined with the probe installation reference manual, the installation inclination angle θ of the entire bottom surface of the shroud 1 is preferably 2°. Through fluid simulation, analyze the fluid state near the shroud 1 according to different installation angles. When welding, mill the upper plane of the shroud 1 according to the coordinate projection formula of the three-segment curved surface, optimize the dimensions of the three-segment curved surface of the shroud 1, and optimize the installation angle of the bottom surface of the shroud 1, so that the negative pressure on the probe of the depth sounder is small, and the eddy current and vibration noise are small.

[0038] This application optimizes the layout of the probe of the deep-water echo sounder based on a combination of fluid mechanics numerical simulation and the setting of a deflector. Through fluid simulation analysis, the area where the bubbles and noise at the bottom of the ship have the least impact on the probe during the operation of the ship is determined. The probe is arranged in this area to ensure the normal operation of the probe, so that the probe is less affected by bubbles and noise during the navigation of the ship, and the detection accuracy of the echo sounder during navigation is improved. It can be used to guide the overall layout optimization design of similar or similar sensors. The layout method has been applied to the overall optimization layout design of deep-water echo sounder probes for cable-laying ships. The actual application effect is good, which solves the problem of abnormal operation of deep-water echo sounder probes in severe sea conditions and can meet the actual use requirements of cable-laying ships.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep water depth sounder probe device, characterized in that: The invention comprises a deflector (1), a depth sounder probe assembly 1 (2), a depth sounder probe assembly 2 (3), an anti-corrosion zinc block (4) and a bottom plate (6); the deflector (1) comprises a bottom plate (11), a box wall (12) and a partition (13); the upper edge of the box wall (12) is fixedly connected to the bottom plate (6), and the lower edge of the box wall (12) is fixedly connected to the bottom plate (11); the lower edge of the partition (13) is vertically connected to the bottom plate (11), so as to divide the interior of the deflector (1) into two spaces, which are used to install the depth sounder probe assembly 1 (2) and the depth sounder probe assembly 2 (3) respectively.

2. The deep water sounder probe device according to claim 1, characterized in that: The partition plate (13) is provided with an upper recess (13c) and a lower recess (13e), and the upper recess (13c) and the lower recess (13e) are used as seawater passages.

3. The deep water depth sounder probe device according to claim 1, characterized in that: The anti-corrosion zinc block (4) is installed at the middle and lower part of the partition (13) and faces one side of the depth sounder probe assembly 2 (3).

4. The deep water depth sounder probe device according to claim 1, characterized in that: The deflector (1) is configured as a special-shaped box-type structure that tapers along the direction of coastal water flow; the box wall (12) is formed by combining and mirroring three curved surfaces, namely, curved surface 1 (12a), curved surface 2 (12b), and curved surface 3 (12c).

5. The deep water depth sounder probe device according to claim 4, characterized in that: The three curved surfaces, namely, curved surface 1 (12a), curved surface 2 (12b) and curved surface 3 (12c), are connected by welding, as are their upper edges and the bottom plate (6), and their lower edges and the bottom plate (11).

6. The deep water depth sounder probe device according to claim 5, characterized in that: The line type formulas of surface 1 (12a), surface 2 (12b), and surface 3 (12c) are as follows: The coordinate plane of the coordinate system is the upper plane of the fairing (1), the coordinate origin O is taken at the center of the upper plane of the bulkhead (13), X is the longitudinal centerline of the bottom of the ship; Y1 is the Y coordinate of the projection of the first curved surface (12a); Y2 is the Y coordinate of the projection of the second curved surface (12b); and Y3 is the Y coordinate of the projection of the third curved surface (12c).

7. The method for arranging a deep water depth sounder probe device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Select the area where the depth sounder probe device is to be deployed The bubbles generated by the bow (10) of the cable-laying vessel move forward with the vessel, and continuously expand along the bottom shape of the hull (20) from the bow (10) to the stern (30), and are absorbed by the propeller (40). Through simulation analysis, a reasonable interval with a smaller bubble influence is section A at the bottom of the lower bow area, and this area is defined as a along the longitudinal length of the ship. Section A is the area where the depth sounder probe device is arranged. Step 2: Arrange the installation position of the depth sounder probe device According to the ship's bow outer plate line (1B), the horizontal distance from the outer end of the ship's bow to the starting point C of the bottom plane is determined to be L3, that is, the angle θ1 between the tangent line of the end point C of the outer plate line (1B) and the horizontal line is 0°; the reasonable area A for the arrangement of the depth sounder probe device includes the outer plate line (1B) and the bottom plane CD. Considering the convenience of installation and construction, the depth sounder probe device is arranged within the bottom plane CD of section A. The formula for the installation position range L1 of the depth sounder probe device is as follows: L1≤a-L3; Step 3: Determine the installation angle of the air deflector According to the hull structure angle and the form of the fairing, the simulation analysis method is used for iterative calculation: S31: Use fluid mechanics simulation software to analyze the smoothness of the water flow near the guide cover (1); S32: The influence of different inclination angles on the negative pressure near the deflector (1) is analyzed. The results show that the smaller the negative pressure, the smoother the flow field near the deflector (1). Combined with the probe installation reference manual, the inclination angle θ of the bottom surface of the deflector (1) is determined to be 2°.

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